大学化学 >> 2019, Vol. 34 >> Issue (2): 70-75.doi: 10.3866/PKU.DXHX201806033

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重新审视滴定分析

尹学博*()   

  • 收稿日期:2018-06-25 发布日期:2019-02-26
  • 通讯作者: 尹学博 E-mail:xbyin@nankai.edu.cn
  • 基金资助:
    国家自然科学基金(21575090);国家重点基础研究发展计划(973计划)(2015CB932001)

Vision of Volumetric Titration Analysis

Xuebo YIN*()   

  • Received:2018-06-25 Published:2019-02-26
  • Contact: Xuebo YIN E-mail:xbyin@nankai.edu.cn
  • Supported by:
    国家自然科学基金(21575090);国家重点基础研究发展计划(973计划)(2015CB932001)

摘要:

滴定分析是化学分析教学的重要内容,但滴定分析给人的印象是样品用量大、分析时间长、灵敏度低、条件苛刻等。本文指出了上述问题的原因,通过具体例子证明了滴定分析可以降低样品用量、提高样品通量,选择电势或纳米材料等指示方法可以提高灵敏度、降低条件选择难度。本文希望让学生了解不一样的滴定分析以及滴定的丰富应用,激发学生的学习兴趣。

关键词: 滴定分析, 滴定终点, 自动滴定, 化学分析

Abstract:

Volumetric titration analysis is an important content of chemical analysis; but it is traditionally considered to use large amount sample, take long analysis time, have low sensitivity, and involve harsh analytical conditions. This paper provides perspectives for the above issues. Examples are introduced to illustrate that the sample amount can be easily reduced with improved sample throughput by the use of automatic titration analysis. The non-traditional end-point indication method improves the sensitivity with simplified analytical condition. We hope to introduce the different titration analysis and the breadth of applications to students, and thus, to stimulate their interest.

Key words: Titration analysis, End point, Automatic titration, Chemical analysis

MSC2000: 

  • G64